In other games

Description

It blocks additional effects when the Pokémon is hit by an attacking move!

Trivia

Shield Dust effectively prevents the Pokémon from being frozen in battle by any Pokémon (except those with Mold Breaker or one of its variants), as the Freeze status ailment is always caused as a secondary effect of an opponent's move, and the status cannot be passed to another Pokémon via Baton Pass or Synchronize.

Similarly, Shield Dust prevents the Pokémon from flinching as it is always caused as a secondary effect of an opponent's move.